Nephthys, here shown striding with her left leg forward, is one of the four protectresses of the dead. She is the sister of Isis and Osiris, and the wife of Seth. She is found on every mummy, usually on the upper torso and in company of Isis.
Thoth is usually depicted as a human with the head of an ibis, but representations of him as a dog-faced baboon are also common. It is likely that amulets of Thoth in ibis-form bore funerary associations. He is responsible for knowledge, measurement, wisdom, and thought, and is also considered to have given the Egyptians their hieroglyphic writing.
Isis, here shown striding with her left leg forward and wearing the hieroglyph for her name on her head, is the archetypal protective mother goddess. She is found on every mummy, usually on the upper torso, and often with her sister Nephthys.
Lapis lazuli was considered a semi-precious stone and not found locally to the Egyptians. Its status and value derived in part from the fact that it had to be imported, most likely from Afghanistan.
To find out more about Ancient Egyptian amulets please see our relevant blog post: Egyptian Amulets and their Meanings: Ancient Egyptian Gods.